(4) Shalt speak out of the ground.--The words paint the panic of the besieged, the words pointing probably to Sennacherib's invasion. They spoke in whispers, like the voice of the spectres which men heard in the secret chambers of the soothsayers. The war-cry of the brave was changed into the feeble tones of those that "peep and mutter." (See Note on Isaiah 8:19.)

Verse 4. - Thy speech shall be low. The feeble cries of a people wasted and worn out by a long siege are intended. These cries would resemble those which seemed to come out of the ground when a necromancer professed to raise a ghost. The Hebrew 'ohv is used both of the necromancers (Leviticus 19:31; Leviticus 20:6, etc.) and of the ghosts which they professed to raise (1 Samuel 28:7, 8; 2 Kings 21:6, etc.). Here the "ghost" is spoken cf. Thy speech shall whisper; literally, chirp (comp. Isaiah 8:19). The word used occurs only in Isaiah.

29:1-8 Ariel may signify the altar of burnt-offerings. Let Jerusalem know that outward religious services will not make men free from judgements. Hypocrites never can please God, nor make their peace with him. God had often and long, by a host of angels, encamped round about Jerusalem for protection and deliverance; but now he fought against it. Proud looks and proud language shall be brought down by humbling providences. The destruction of Jerusalem's enemies is foretold. The army of Sennacherib went as a dream; and thus the multitudes, that through successive ages fight against God's altar and worship, shall fall. Speedily will sinners awake from their soothing dreams in the pains of hell.And thou shalt be brought down,.... To the ground, and laid level with it, even the city of Jerusalem, as it was by the Romans; and as it was predicted by Christ it would, Luke 19:44 though some understand this of the humbling of the inhabitants of it, by the appearance of Sennacherib's army before it, and of which they interpret the following clauses:

and shalt speak out of the ground, and thy speech shall be low out of the dust; which some explain of the submissive language of Hezekiah to Sennacherib, and of his messengers to Rabshakeh, 2 Kings 18:14 as Aben Ezra and Kimchi; but it is expressive of the great famine in Jerusalem, at the time of its siege by the Romans, when the inhabitants were so reduced by it, as that they were scarce able to speak as to be heard, and could not stand upon their legs, but fell to the ground, and lay in the dust, uttering from thence their speech, with a faint and feeble voice:

and thy voice shall be as one that hath a familiar spirit, out of the ground, and thy speech shall whisper out of the dust: or peep and chirp, as little birds, as Jarchi and Kimchi, as those did that had familiar spirits; and as the Heathen oracles were delivered, as if they came out of the bellies of those that spoke, or out of caves and hollow places in the earth; and this was in just retaliation to these people, who imitated such practices, and made use of such spirits; see Isaiah 8:19.